Im` not sure the 'shift' would have impact or not on an eruption...if its buiilding up steam, its going to erupt where the cracks are or path of least restriction...no matter if theres a mile of ice over it... but during the 'build up' time, I`msure the earth around it would heat up and melt the ice...possibly thats the difference between melting in the south and building back up ice in the north? with the +_40 yr cycling of the solar input....theres lots more to it than a few "Hummers".....
